同义词
- polyvinyl chloride
- premature ventricular contraction
词路径
- entity
- physical entity
- matter
- substance
- material
- stuff
- chemical
- chemical substance
- compound
- chemical compound
- polymer
- synthetic resin
- vinyl polymer
- vinyl resin
- polyvinyl resin
- polyvinyl chloride
- PVC
上位词
- arrhythmia
- cardiac arrhythmia
- polyvinyl resin
- vinyl polymer
- vinyl resin